I know it's controversial but i do think that the metal dome tweeter of the 8030C has an impact on the sound vs the KH120 titanium / fabric tweeter
I know we've discussed this alot, so I don't expect to change your mind, but this is the way I see it is this: It's a much simpler explanation that having an extra dB or two of energy in certain parts of the frequency response/directivity explain the difference in sound.
For example, if I EQ my speakers with a 2dB bump between 1-2kHz, I would definitely hear that! In fact, I often do actually implement similar EQ to account for the perceptual dip around 1.8kHz in the phantom center.
Put another way, these two flattish speakers may both sound good, but they also must sound different because of their different frequency response and directivity characteristics. So it's much easier to have those known and well-researched quantities explain a speaker sounding brighter or darker than things like distortion, materials, time-domain performance etc.
One could say that it becomes very difficult to interpret multiple small differences in measurements at this level of performance, and that it's easier to just listen and see what your ears hear; that I understand, and in that respect, I agree with you. Sometimes my interpretations are likely wrong. I just think these seemingly basic measurements reveal so much more than people sometimes assume.
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